Find Shinylive Code Blocks in Quarto HTML

Parses HTML content to extract and process Shinylive code blocks for both R and Python applications. This function identifies code blocks with class 'shinylive-r' or 'shinylive-python' and processes their content into structured application data.

Usage

find_shinylive_code(html)

Arguments

html

Character string containing HTML content. The HTML should contain code blocks with class 'shinylive-r' or 'shinylive-python' to be processed.

Value

A list of parsed Shinylive applications. Each list element contains:

• engine: Character string indicating the application type ("r" or "python")

• options: List of parsed YAML-style options from the code block

• files: List of file definitions, where each file contains:

  • name: Character string of the file name

  • content: Character string of the file content

  • type: Character string indicating the file type

Details

The function performs the following steps:

1. Parses the HTML content using rvest

2. Extracts code blocks with classes 'shinylive-r' or 'shinylive-python'

3. For each code block:

   • Determines the engine type from the 'data-engine' attribute

   • Extracts the code text content

   • Parses the code block structure using parse_code_block()

Code blocks should follow the Shinylive format with optional YAML-style options (prefixed with '#|') and file markers (prefixed with '## file:').

See also

parse_code_block

Examples

if (FALSE) { # \dontrun{
html_content <- '
<pre class="shinylive-r" data-engine="r">
#| viewerHeight: 500
## file: app.R
library(shiny)
ui <- fluidPage()
server <- function(input, output) {}
shinyApp(ui, server)
</pre>
'
apps <- find_shinylive_code(html_content)
} # }